公开(公告)号：US06735261B1

公开(公告)日：2004-05-11

申请号：US09611488

申请日：2000-07-07

申请人： Gerald Oberschmidt ,  Veselin Brankovic ,  Dragan Krupzevic ,  Masayoshi Abe ,  Tino Konschak ,  Thomas Dölle

发明人： Gerald Oberschmidt ,  Veselin Brankovic ,  Dragan Krupzevic ,  Masayoshi Abe ,  Tino Konschak ,  Thomas Dölle

IPC分类号： H04L2706

CPC分类号： H03D9/04 ,  H04B1/30 ,  H04L27/2331

摘要： A technique for calibrating a N-port receiver, such as for example a 5- or 6-port receiver is proposed. The N-port receiver (1) comprises a first input (2) for a RF signal to be detected, a second input (3) for a RF signal originating from a local oscillator (4) and N−2 output terminals. Calibrating signals are generated on the basis of the RF signal supplied by the local oscillator (4). The calibration signals are fed to the first input (2) and/or the second input (3) of the N-port receiver (1). Calibration coefficients are calculated on the basis of the output signals generated by the N-port receiver (1) in response to the feeding of the calibration signals. The calibration signals are unmodulated signals and are only processed by means of a passive RF circuitry in the calibration device (100). The solutions according to the present invention allow a simple calibration of N-port receivers, which can be used as IQ demodulators or converters. Thereby a local oscillator (4) is used as a RF source for the calibration.

摘要翻译： 提出了一种用于校准N端口接收机的技术，例如5或6端口接收机。 N端口接收器（1）包括用于要检测的RF信号的第一输入（2），用于来自本地振荡器（4）和N-2个输出端的RF信号的第二输入（3）。 基于由本地振荡器（4）提供的RF信号产生校准信号。 校准信号被馈送到N端口接收器（1）的第一输入端（2）和/或第二输入端（3）。 基于由N端口接收器（1）响应于校准信号的馈送而产生的输出信号来计算校准系数。 校准信号是未调制信号，并且仅通过校准装置（100）中的无源RF电路来处理。根据本发明的解决方案允许N端口接收机的简单校准，其可以用作IQ解调器或 转换器。 因此本地振荡器（4）被用作用于校准的RF源。